AMD Radeon HD 7870 XT vs ATI Radeon HD 2600 XT Mac Edition

VS

AMD Radeon HD 7870 XT

ATI Radeon HD 2600 XT Mac Edition

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 256MB VRAM Radeon HD 2600 XT Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 XT 's Advantages

Released 4 years and 9 months late

Boost Clock975MHz

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (192.0GB/s vs 25.60GB/s)

1416 additional rendering cores

ATI Radeon HD 2600 XT Mac Edition 's Advantages

Lower TDP (45W vs 185W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT +1682%

2.995 TFLOPS

Radeon HD 2600 XT Mac Edition

0.168 TFLOPS

Radeon HD 7870 XT

VS

Radeon HD 2600 XT Mac Edition

Graphics Card

Nov 2012

Release Date

Feb 2008

Southern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

925 MHz

Base Clock

-

975 MHz

Boost Clock

-

1500 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

192.0GB/s

Bandwidth

25.60GB/s

Render Config

24

Compute Units

3

-

1536

Shading Units

120

96

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

64 KB

-

Theoretical Performance

31.20 GPixel/s

Pixel Rate

2.800 GPixel/s

93.60 GTexel/s

Texture Rate

5.600 GTexel/s

-

2.995 TFLOPS

FP32 (float)

168.0 GFLOPS

748.8 GFLOPS

FP64 (double)

-

Board Design

185W

TDP

45W

450 W

Suggested PSU

200 W

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

2x DVI

2x 6-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

RV630

Tahiti LE (215-0821122)

GPU Variant

-

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

4.313 billion

Transistors

0.39 billion

352 mm²

Die Size

153 mm²

Graphics Features

12 (11_1)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.0

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